trying to figure out what gears I need - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #16 (permalink)  
Old 12-31-2010, 12:09 PM
matts37chev's Avatar
I don't understand?
 

Last journal entry: this is only a test
Last photo:
Join Date: Jan 2009
Location: Shelton,Wa.
Age: 45
Posts: 2,420
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
Quote:
Originally Posted by sqzbox
Like mine? 4:09's in the front and 4:10's in the rear. I only have 31" M/T's
but in low range, 3rd gear is like first in high range.The secret to full pulls is wheel spin like seeing 70 mph on the speedo all the way through the pit.
thats right, 4:09's and 4:11's would be even better.
you might try just putting 4:56's in the rear and see what that does
the other way to do this is put a little taller tire in front.
keep the 35's in the rear but then put some 37's in the front.
or are you in a 35" and smaller class?
what is the actual tire size you are running?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 12-31-2010, 01:56 PM
inquiring_mind2's Avatar
a shade tree mechanic
 
Last photo:
Join Date: Jul 2004
Location: Illinois
Age: 43
Posts: 477
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I am running eagle rods in it.
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 12-31-2010, 01:59 PM
inquiring_mind2's Avatar
a shade tree mechanic
 
Last photo:
Join Date: Jul 2004
Location: Illinois
Age: 43
Posts: 477
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thats right, 4:09's and 4:11's would be even better.
you might try just putting 4:56's in the rear and see what that does
the other way to do this is put a little taller tire in front.
keep the 35's in the rear but then put some 37's in the front.
or are you in a 35" and smaller class?
what is the actual tire size you are running?



I thought about putting 513 in the front and 456 in the rear??? or is it the other way around??513 in rear and 456 in front?? I am in the 35 and under tire class. That is how we run them around here. so I have to keep the 35 in tires in mind when I am trying to decide on what to do
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 12-31-2010, 02:00 PM
inquiring_mind2's Avatar
a shade tree mechanic
 
Last photo:
Join Date: Jul 2004
Location: Illinois
Age: 43
Posts: 477
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I also want the wheel speed that is why I thought about a taller gear so that way I could go from second to drive and then back down if I needed to
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 12-31-2010, 02:47 PM
matts37chev's Avatar
I don't understand?
 

Last journal entry: this is only a test
Last photo:
Join Date: Jan 2009
Location: Shelton,Wa.
Age: 45
Posts: 2,420
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
Quote:
Originally Posted by inquiring_mind2



I thought about putting 513 in the front and 456 in the rear??? or is it the other way around??513 in rear and 456 in front?? I am in the 35 and under tire class. That is how we run them around here. so I have to keep the 35 in tires in mind when I am trying to decide on what to do
yes, it is the other way around.
bigger number is lower (or shorter) gears
smaller number is higher (or taller ) gears

5:13 in the rear and 4:56 in the front is a big spread
might be better with
4:88 in the rear and 4:56 in the front, or
5:13 in the rear and 4:88 in the front

i originally suggested just putting the 4:56 in the rear because it would be cheaper, only doing one end
however thats not much of a jump
Reply With Quote Quick reply to this message
  #21 (permalink)  
Old 12-31-2010, 06:16 PM
inquiring_mind2's Avatar
a shade tree mechanic
 
Last photo:
Join Date: Jul 2004
Location: Illinois
Age: 43
Posts: 477
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
yes, it is the other way around.
bigger number is lower (or shorter) gears
smaller number is higher (or taller ) gears

5:13 in the rear and 4:56 in the front is a big spread
might be better with
4:88 in the rear and 4:56 in the front, or
5:13 in the rear and 4:88 in the front


Ok great now my next question is if I would go with the 513 in the rear and 488 in the front will I be about 6800 RPM'S?? I am running the turbo 350 and the dana 300 transfer case. And I would be running the low side and I am wanting to be in drive for the wheel speed..I am not real familiar with how all of this stuff works together. Obviously that is why I came and asked the best people around
Reply With Quote Quick reply to this message
  #22 (permalink)  
Old 12-31-2010, 08:10 PM
matts37chev's Avatar
I don't understand?
 

Last journal entry: this is only a test
Last photo:
Join Date: Jan 2009
Location: Shelton,Wa.
Age: 45
Posts: 2,420
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
i cant find the calculator im looking for
but if you call these guys they can fix you up
http://www.ringpinion.com/Default.aspx

the other thing that makes that tricky is two different gear ratio's you kind of got to split the difference in calculating rpm's
Reply With Quote Quick reply to this message
  #23 (permalink)  
Old 01-01-2011, 08:40 AM
sqzbox's Avatar
My pipes are my music
 
Last photo:
Join Date: Sep 2009
Location: indiana
Age: 64
Posts: 2,938
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
From the look of your jeep in your avatar you've done this before. So, how are you doing up to this point? 100 ft. 150 ft. The first two times I ran the bog I only made it 102 ft. before killing the engine by plugging up the air filter because I was too stupid to realize an open element is not the way to go.
Truck was doing a good job for a pure stocker but I need to switch to a closed system with remote air intake to do any good beyond that. Maybe next season. The guy's that went the farthest or all the way through had their wheels spinning about 100 mph. with no drop in RPM till the end of the track or buried themselves in the goo about 2/3rd's of the way.
Reply With Quote Quick reply to this message
  #24 (permalink)  
Old 01-01-2011, 11:41 AM
inquiring_mind2's Avatar
a shade tree mechanic
 
Last photo:
Join Date: Jul 2004
Location: Illinois
Age: 43
Posts: 477
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I Am doing ok the pit we use is 200 ft. I can go about half way and I bogg down. No one in my class usually clears the pit. But I am wanting to clear the pit so I am trying to figure out the gearing so I can make it out. You are right about the wheel speed. so that is why I am here to see if I can get mine to that level
Reply With Quote Quick reply to this message
  #25 (permalink)  
Old 01-01-2011, 11:42 AM
inquiring_mind2's Avatar
a shade tree mechanic
 
Last photo:
Join Date: Jul 2004
Location: Illinois
Age: 43
Posts: 477
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thanks MAtts37chev I will give them a call and see what they have to say
Reply With Quote Quick reply to this message
  #26 (permalink)  
Old 01-01-2011, 11:59 AM
big gear head's Avatar
High Performance Rear Ends
 
Last photo:
Join Date: Nov 2009
Location: Central City, KY
Posts: 2,044
Wiki Edits: 0

Thanks: 10
Thanked 410 Times in 353 Posts
http://www.ringpinion.com/Calc_RPM.aspx
If you play with this you can probably figure out what you need. You will need to know your gear ratios in the transmission and transfer case to make it work right.
Reply With Quote Quick reply to this message
  #27 (permalink)  
Old 01-01-2011, 12:13 PM
matts37chev's Avatar
I don't understand?
 

Last journal entry: this is only a test
Last photo:
Join Date: Jan 2009
Location: Shelton,Wa.
Age: 45
Posts: 2,420
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
i used to have a tire size, gear ratio,rpm chart, but i cant find it
Reply With Quote Quick reply to this message
  #28 (permalink)  
Old 01-01-2011, 01:15 PM
inquiring_mind2's Avatar
a shade tree mechanic
 
Last photo:
Join Date: Jul 2004
Location: Illinois
Age: 43
Posts: 477
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
ok thanks Big Gear Head
Reply With Quote Quick reply to this message
  #29 (permalink)  
Old 01-01-2011, 02:09 PM
sqzbox's Avatar
My pipes are my music
 
Last photo:
Join Date: Sep 2009
Location: indiana
Age: 64
Posts: 2,938
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by matts37chev
i used to have a tire size, gear ratio,rpm chart, but i cant find it
And your only 41? You ain't seen nothing yet!
Reply With Quote Quick reply to this message
  #30 (permalink)  
Old 01-01-2011, 04:05 PM
inquiring_mind2's Avatar
a shade tree mechanic
 
Last photo:
Join Date: Jul 2004
Location: Illinois
Age: 43
Posts: 477
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
sqz what part of Indiana are you from
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
8.5 10 bolt spider gears Hubes Transmission - Rearend 1 07-02-2008 04:38 PM
Changing rear end gears? Cutlass403 Transmission - Rearend 8 10-05-2007 01:11 PM
What speedometer gears do I have? Johnny Bravo Transmission - Rearend 3 04-11-2007 09:19 PM
bbc what gears to run.? chevelle4542speed Engine 5 12-07-2006 05:47 PM
Exploded spider gears...? (12 bolt GM) Bumpstick Transmission - Rearend 7 10-07-2003 06:00 PM


All times are GMT -6. The time now is 05:50 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.